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Old 10-11-2009, 06:25 PM   #1
9165pt0
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Default pinging at 10 degrees timing?

hey guys i was told by the smog shop that my timing was only at 7 degrees on my stock 5.0. it runs strong and doesnt ke it lags or anything. so i set it to 10 and it feels way better, but if you get on the throttle at freeway speeds it pings. i thought 10 degrees was the stock base timing?
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Old 10-11-2009, 06:41 PM   #2
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check to make sure your balancer hasnt spun
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Old 10-11-2009, 06:50 PM   #3
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how would i test it?
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Old 10-11-2009, 07:03 PM   #4
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roll motor up to tdc and check where mark on balancer is, and if balancer is not spun then it may be carbon build up in the chambers/on top of the pistons and a good seafoam treatment will cure the issue
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Old 10-11-2009, 07:05 PM   #5
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EGR system working?
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Old 10-11-2009, 07:45 PM   #6
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my 5.0 pinged real bad too under heavy throttle. switched to 93 octance and been fine ever since. what octane are you running?
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Old 10-11-2009, 08:19 PM   #7
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i got a code for my egr valve isnt working properly. also my spark plugs are chalk white. if i seafoam it should i change the plugs? they have about 7000 miles on them
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Old 10-11-2009, 09:11 PM   #8
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if seafoam fouls the plkugs out during the treatment then yes but if not don't worry
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Old 10-11-2009, 10:33 PM   #9
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ok ill seafoam it and give an update
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Old 10-12-2009, 09:03 AM   #10
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i got a code for my egr valve isnt working properly. also my spark plugs are chalk white. if i seafoam it should i change the plugs? they have about 7000 miles on them
That's where I would start
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